Reason for being · The laddering record · Element

The rungs

Each successive answer in the why-chain, in order.

The part

What it is

The rungs show where the thinking moved from describing an activity to naming a consequence that matters to someone.

Reading them in order is the quickest way for a newcomer to understand why the final sentence says what it says.

The smallest level

The attributes it carries

Each attribute is one of the framework’s shared types. What a date is, and how it is written, is defined once for the whole model — the note here says what it means in this particular place.